A vibrant and cheerful 5-layer rainbow cake perfect for spring celebrations, featuring moist layers and a lightly sweet buttercream frosting.
Use gel food coloring for vibrant layers. Ensure all ingredients are at room temperature for best results. Cool layers completely before frosting to prevent melting. If frosting is too soft, chill for 10 minutes and re-whip. For gluten-free or vegan options, substitute flour and dairy accordingly.
Keywords: rainbow cake, spring cake, layer cake, colorful cake, buttercream frosting, easy cake recipe, festive dessert